v3.25.2
Capital structure and noncontrolling interests - Summary of Noncontrolling Interests (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Mar. 31, 2025
Jun. 30, 2024
Mar. 31, 2024
Jun. 30, 2025
Jun. 30, 2024
Equity, Attributable to Noncontrolling Interest [Roll Forward]            
Balance, beginning of period $ 1,019 $ 1,013 $ 630 $ 622 $ 1,013 $ 622
Distributions     (12) (12)    
Stock-based compensation 29 40 6 5    
Other comprehensive income (loss) 170 47 (25) (71)    
Expiration of redemption option 6     92    
Net income (loss) (7)   (80) (48) (7) (128)
Balance, end of period 1,022 1,019 614 630 1,022 614
Noncontrolling interests            
Equity, Attributable to Noncontrolling Interest [Roll Forward]            
Distributions (13) (14) (12) (12)    
Stock-based compensation 7 21 2 2    
Other comprehensive income (loss) 18 5 (3) (8)    
Expiration of redemption option 6     27    
Net income (loss) (1)   (12) (8)    
Reallocation of noncontrolling interests (7) (6) 9 7    
OP Units reclassification (7)          
Noncontrolling Interest, Operating Partnership Units            
Equity, Attributable to Noncontrolling Interest [Roll Forward]            
Balance, beginning of period 951 944 608 598 944 598
Distributions (12) (13) (12) (11)    
Stock-based compensation 7 21 0 0    
Other comprehensive income (loss) 17 5 (3) (8)    
Expiration of redemption option 6     27    
Net income (loss) (1)   (8) (5)    
Reallocation of noncontrolling interests (7) (6) 9 7    
OP Units reclassification (7)          
Balance, end of period 954 951 594 608 954 594
Noncontrolling Interest, Other Consolidated Subsidiaries            
Equity, Attributable to Noncontrolling Interest [Roll Forward]            
Balance, beginning of period 14 14 15 15 14 15
Distributions 0 0 0 (1)    
Stock-based compensation 0 0 0 0    
Other comprehensive income (loss) 0 0 0 0    
Expiration of redemption option 0     0    
Net income (loss) 0   0 1    
Reallocation of noncontrolling interests 0 0 0 0    
OP Units reclassification 0          
Balance, end of period 14 14 15 15 14 15
Noncontrolling Interest, Management Profits Interests Units            
Equity, Attributable to Noncontrolling Interest [Roll Forward]            
Balance, beginning of period     7 9   9
Distributions     0 0    
Stock-based compensation     2 2    
Other comprehensive income (loss)     0 0    
Expiration of redemption option       0    
Net income (loss)     (4) (4)    
Reallocation of noncontrolling interests     0 0    
Balance, end of period     $ 5 $ 7   $ 5
Noncontrolling Interest, Other Consolidated Subsidiaries, Operating Partnership Equivalent Units            
Equity, Attributable to Noncontrolling Interest [Roll Forward]            
Balance, beginning of period 54 55     55  
Distributions (1) (1)        
Stock-based compensation 0 0        
Other comprehensive income (loss) 1 0        
Expiration of redemption option 0          
Net income (loss) 0          
Reallocation of noncontrolling interests 0 0        
OP Units reclassification 0          
Balance, end of period $ 54 $ 54     $ 54